# -*- coding: utf-8 -*-

# Scrapy settings for Books project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
#     https://docs.scrapy.org/en/latest/topics/settings.html
#     https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#     https://docs.scrapy.org/en/latest/topics/spider-middleware.html

BOT_NAME = 'Books'

SPIDER_MODULES = ['Books.spiders']
NEWSPIDER_MODULE = 'Books.spiders'

DUPEFILTER_CLASS = "scrapy_redis.dupefilter.RFPDupeFilter" # 指定哪个去重方法给request对象去重
SCHEDULER = "scrapy_redis.scheduler.Scheduler" # 调度器去重DUPEFILTER_CLASS中的请求
SCHEDULER_PERSIST = True  # 调度器的持久化开启[persist]
# REDIS_URL = 'redis://root:11111@leadingme.top:6379'
# 其他主机可以通过连接本机的redis实现分布式，这里用于测试用的本机回环地址
REDIS_URL = 'redis://127.0.0.1:6379'

# MONGO_URL = 'leadingme.top'
MONGO_URL = '127.0.0.1'
MONGO_DB = 'Books'

PROXY_POOL_URL = 'http://leadingme.top:5000/get'
# LOG_LEVEL = 'WARNING'
# LOG_FILE = './log.log'
# Crawl responsibly by identifying yourself (and your website) on the user-agent
# USER_AGENT = 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534.57.2 (KHTML, like Gecko) Version/5.1.7 Safari/534.57.2'

# Obey robots.txt rulesBooksPipeline
ROBOTSTXT_OBEY = False

# Configure maximum concurrent requests performed by Scrapy (default: 16)
#CONCURRENT_REQUESTS = 32

# Configure a delay for requests for the same website (default: 0)
# See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
DOWNLOAD_DELAY = 1
# The download delay setting will honor only one of:
#CONCURRENT_REQUESTS_PER_DOMAIN = 16
#CONCURRENT_REQUESTS_PER_IP = 16

# Disable cookies (enabled by default)
#COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
#TELNETCONSOLE_ENABLED = False

# Override the default request headers:

DEFAULT_REQUEST_HEADERS = {
  'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
  'Accept-Language': 'zh-CN,zh;q=0.9,und;q=0.8',
}

# Enable or disable spider middlewares
# See https://docs.scrapy.org/en/latest/topics/spider-middleware.html
#SPIDER_MIDDLEWARES = {
#    'Books.middlewares.BooksSpiderMiddleware': 543,
#}

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
# DOWNLOADER_MIDDLEWARES = {
#     'Books.middlewares.RandomUserAgentMiddleware': 543,
#     # 'Books.middlewares.ProxyMiddleware': 544,  #如需要设置代理ip,
#     # 将系统的UserAgent中间件设置为None，这样就不会启用，否则默认系统的这个中间会被启用
# }

# Enable or disable extensions
# See https://docs.scrapy.org/en/latest/topics/extensions.html
#EXTENSIONS = {
#    'scrapy.extensions.telnet.TelnetConsole': None,
#}

# Configure item pipelines
# See https://docs.scrapy.org/en/latest/topics/item-pipeline.html
ITEM_PIPELINES = {
   'Books.pipelines.BooksPipeline': 300,
   'Books.pipelines.MongoPipeline': 301,
}

# Enable and configure the AutoThrottle extension (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/autothrottle.html
AUTOTHROTTLE_ENABLED = True
# The initial download delay
AUTOTHROTTLE_START_DELAY = 0.5
# The maximum download delay to be set in case of high latencies
#AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
#AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
#AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
#HTTPCACHE_ENABLED = True
#HTTPCACHE_EXPIRATION_SECS = 0
#HTTPCACHE_DIR = 'httpcache'
#HTTPCACHE_IGNORE_HTTP_CODES = []
#HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'
